Sash-weight.



. CROSS REFEENcE PATENTED APR. 7, 1908.

P. ascawEDTMAN. SASH WEIGHT.

APPLICATION FILED JAB. 7. 1907.

Flggl.

' Witwe-ases inventor QM Atty's.

EXAMINE l FERDINAND C. SCHWEDTMAN, OF ST. LOUIS, MISSOURI.

, SA Sli-WEIGHT.

Specification of Letters Patent.

Patented April 7, 1908.

Application filed January 7, 1907. Serial No. 351,164.

T o all whom 'it mai/ concern.'

Beit known that. `I,IiiiRDiNANDC. Sonwiini- MAN, a citizen of the. lUnited States, residing at St. Louis, Missouri, have invented certain new and useful Improvements in Sash- VVeights, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it. appertains to make and use the same, reference being had to the accom anying drawings, formingrpart of this speci 'cation is invention relates to a new and useful improvement in sash weights, the object being to make the weight oixa composition material instead of refined iron, 'w' iicii is usually employed. This material possesses the advantage of cheapness over refined iron namely', iron which has been geduced or separated from the ore, in addition to which it does not haveto be melted or oured into molds, which'pkractice prevails wit irespect to cast iron weig ts.

Figure 1 is a side elevational view of my improved sash weight; and Fig. 2 is a cross sectional view on the line 2 2 of Fig. 1.

In the drawings 1 indicates the bod y of the weight formed of my improved composition material, which weight may be formed with an o ening 3 through which the sash cord ma i e passed and knotted at its lower en d.

A he material of which the weight is coinosed may be iron orev or other heavy granuar material the cost price of which is less than that of cast iron, but I prefer to use barytes on account of its cheapness as coinare to iron ore and its hiifh specific gravity.

ary tes is a heavy iiiinere essentially white in color, but for my purposes l can use. theI discolored castoff roducts not available for uses yo w uci `pulverized white barytes is employed, such, for instance as paint or pigment.

'The ba rtes which .l use in my improved weight is i isintcgratcd or reduced to granular form, 1 having found that it is not necessary to carry this' reduction to a point where the material will be pulverulent. To one pound of granular barytes I add about one ounce of l lass silicate of soda), mixing well tie woiiigrei ie'ii's n er, and then mold or press the mass into the desired shape. If the opening 3 is to be provided in the weight, the core is arranged in posit-ion in the mold, and after the mass is shaped said core is removed. The composition quickly sets, making a solid, hard mass, but

slightly lighter than an equal bulk of cast iron. water and possesses a high fusing point, `it will be obvious that said ingredient in possessing these properties is highly desirable as a hinder for this purpose, in addition to which it is cheaply produced. I have found .in practice that when the coin osition is mixed it very quickly sets. anti) therefore after the mixture is made it should be molded or pressed into shape without unnecessary l delay. v

hould it be desired to make the vliquid glass insoluble in hot water, a small proportion of aluinpiay be added to the composition while ii is in the liquid state; or another method, and one which I prefer to use, is that of di ping the composition into alum water. Oi course if it is desired -to haireha'n impervious coating of liquid glass on the surface of the com osition, the com osition may be di i ed in iquid glass and) di )pei ipnap iid" t' make it insoluble. 'Ylltcr'Tl-ie weight. is formed, in order to inipnrt a smooth exterior, I prefer to wrap -the same in a paper shell 4. With regard to this, however, it might be found desirable to mold the composition in the paper cylinder 4 in which event the liquid glass would act as an adhesive substance to hold the paper in position, and thus save the necessity result lfrom blows or rubbing contact with rough surfaces. .This coating of tar, paint to rovidea exibleintegument.

am aware that sash weights have heretofore'been made of cnst iron and that it has been pro )ose-d to make sash weights of cement and furnace slar. In view of the faz-i: however, that the ohiinnels for standard cast iron sash weights are usually of given dimensions, to wit, two and one-half inches by two and one-hall inches, it will be obvious that the only available method of complying with these usual conditions is to increase the length, maintaining the cross sectional area within the limits prescribed.

The following comparative table will illustrate the cheapness of my improved weight As liquid glass is insoluble in coldl afterwards of a J l *infr such a substance where the a er l P .i P P or varnish is referably of such character as ies over cast iron, and the advanta es of my improved weight over Weights ma e of material other than cast iron:

From the above table it will be seen that the material and labor cost of my im roved baryt-es wei hts is so small that the ished Weights cou d be sold at one-half the material and labor cost of producing cast iron weights and a profit obtalned.

There is no special disadvantage on account of the length of my im roved weight compared with the length o a ten-pound cast iron weight, because in most windows the channels extend throughout the height of the u per and lower sashes and consequently t e extra length of the weight u to certain limits is not objectionable. l owever, when the sash weight exceeds the length of the standard iron weight over two and onehalf times, it will at once be appreciated why cement, furnace slag and other lighter materials have not been used toany appreciable extent. i

' While it is true that my improved barytes weight is longer and no .as strong as the ordi'- nary cast iron weight, i 1s, on the other hand, not too long to be used practically, and it is sufficiently strong to stand the necessarv handling.

v this third day of There is little strain on the sash ,l

weight after it is once in position, and the safety factor of barytes Weights after they are in place is only about nlne hundred to one.' My improved barytes weight is as strong as the cement and stronger than a Wei ht made of furnace slag.

aving thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. The herein described sash weight, .the same being composed of granular material held to ether b a suitable binder and surrounde by a iilyirous band; substantially as described.

2. As an article of manufacture, a sash weight composed of granular material of eat specific gravity, held together by a inder and molded into the form of an elongated body, and a layer of fibrous material surrounding said body and provided with a coatin of tar, paint or some similar substance W ich will preserve said fibrous material and impart a finished appearance to the weight; substantially as described.

3. As a new article of manufacture, a sash wei ht composed of small particles of barytes belg together by a binder of silicate of soda and molded into the form of an elongated body provided at approximately its center with a longitudinally extending opening, and aexible coverin surroundin said elongated body; substantia y as descri ed.

In testimonyr whereof I hereunto afi'ix my signature in the resence of two witnesses.

.lanuary 1907. FERDINAND C. SCHWEDTMAN. Witnesses:

LENoaE WILSON, GEORGE BAxaWELL. 

